Coaxial centrifugal wet dust removal device and control method thereof

Abstract

The invention discloses a coaxial centrifugal wet dust removal device and a control method thereof. The coaxial centrifugal wet dust removal device comprises a water film forming assembly and a mud-water separation assembly, the water film forming assembly comprises an axial flow impeller and a cyclone for centrifugal sedimentation; each axial flow blade on the axial flow impeller is provided with a plurality of turbulent flow strip seams in a hollowed-out mode, and arc holes are formed in the positions, close to the rotating axis, of the axial flow blades in a hollowed-out mode. A flow deflector for spiral flow guide is arranged on the swirler; the mud-water separation assembly comprises a first dehydration assembly and a second dehydration assembly; the first dewatering assembly comprises a first dewatering cylinder, a dust removal filter screen and a first annular water tank which are arranged on the same horizontal axis and sequentially arranged from inside to outside. According to the coaxial centrifugal wet dust removal device and the control method thereof, the structure is simple and compact, the ventilation resistance is small, dust is captured for multiple times, the combination time of the dust and a water film is guaranteed, dust-containing water mist is dewatered for multiple times, efficient mud-water separation is guaranteed, and the dust removal effect is better.

Description

technical field [0001] The invention relates to the technical field of underground dust removal in coal mines, in particular to a coaxial centrifugal wet dust removal device and a control method thereof. Background technique [0002] Coal is one of the important energy sources in my country at present. In the process of coal production, most of the operations can produce dust with serious hazards. [0003] In recent years, with the improvement of intensive production intensity and mechanization degree of coal mines, the amount of dust generated in coal mining face has increased sharply. From the perspective of occupational health and production safety, dust can not only cause coal miners to suffer from untreatable pneumoconiosis, which threatens the life and health of workers, but also can cause dust explosion accidents when the concentration of underground dust is too high, and the dust It is also easy to enter various working equipment in the mine, which will accelerate t...

AI Technical Summary

Problems solved by technology

From the perspective of occupational health and production safety, dust can not only cause coal miners to suffer from untreatable pneumoconiosis, which threatens the life and health of workers, but also can cause dust explosion accidents when the concentration of underground dust is too high, and the dust It is also easy to enter various working equipment in the mine, which will accelerate the wear of the equipment and make it difficult for the equipment to work normally, thereby affecting the normal production of the coal mine.

[0004] Existing coal seam water injection, spray dust suppression, ventilation dust removal, chemical dust suppression, foam dust removal and other dust removal technologies are widely used in mine dust removal methods in my country. These dust removal technologies generally have dust removal Low efficiency, poor dust removal effect, etc., making it difficult to realize green excavation

The Chinese Invention Patent published on December 1, 2020 has a publication number of CN212039601U "A Two-Stage Swirling Wet Type Dedusting and Gas Scrubber". This scrubber uses two impellers for dust removal, although it has a more thorough purification effect and can Generates greater wind pressure, but on the one hand, the dust removal resistance is large, and it cannot be adjusted adaptively according to the site environment; on the other hand, the two impellers need the motor to provide greater power, which consumes a lot of energy, which is not conducive to energy saving and emission reduction

In addition, the long-term contact and collision between the centrifugal fan and the dust will cause serious wear, increase the operating noise and operating load, and reduce the dust removal efficiency

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